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Spin entanglement loss by local correlation transfer to the momentum

AuthorsLamata, Lucas ; León, Juan ; Salgado, David
KeywordsQuantum entanglement
Fermion systems
Information theory
Issue Date31-May-2006
PublisherAmerican Physical Society
CitationPhysical Review A 73(5): 052325 (2006)
AbstractWe show the decrease of spin-spin entanglement between two s= 1/2 fermions or two photons due to local transfer of correlations from the spin to the momentum degree of freedom of one of the two particles. We explicitly show how this phenomenon operates in the case where one of the two fermions (photons) passes through a local homogeneous magnetic field (optically active medium), losing its spin correlations with the other particle.
Description7 pages, 7 figures.-- PACS nrs.: 03.67.Mn, 03.65.Yz, 03.65.Ud.-- ArXiv pre-print available at: http://arxiv.org/abs/quant-ph/0603225
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevA.73.052325
Appears in Collections:(CFMAC-IFF) Artículos
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